Film box or charger



May zl, .1935. s, NEWMAN 2,001,884

FILM BOX 0R CHARGER Filed Sept. 1, 1934 Patented May 21, 1935 I UNITED. STATES u s mm BOX OR C H ARGER Arthur Samuel NewmamlElighgate. London, England, 'assignor to England Pathscope Limited, London,

I Application September 1, 1934, Serial No. 742,384

In Great Britain- September. 18, 1933 3J0lainis, (c1. sa e- 71) 1 The invention relates to that kind of film box,

known'in the trade as a charger, adapted to contam in one compartment a spool carrying'unexposed film which after passing through the camera is led back into another compartment.

The object of the present invention is to provide such a box that is simple-to construct. that will accommodate a long length of film in a box of small cubical capacity and which may be closed light-tightjwithout anydanger of the box being opened by an unauthorized person.

According to the present invention the film box has an outer casing and an inner part; The inner part-has means for carrying a transverse tube adapted to carry at one end a roll of sensitized film and atthe other end a take-up centre piece on to which the exposed film is wound. Means are provided for locking the casing to the inner part consisting of a flangedftube, the tubular part passing through an aperture inthe outer V v by a trough 5 to receive the edges of the open end casing and fittingtightly within the said transverse tube andthe flanged part fitting closely against the outer casing. The said centre piece is formed so that it maybe driven through the locking device and the transverse tube. Two apertures are formed in the film box, the one to allow the film to pass to the, gate and the other to allow the exposed film to return to the centre, piece.

According to the preferred construction the said inner part has a front plate in which are formed the two apertures. Said front plate has a trough around its exterior and a carrier at its rear to support two guides for the film, one guide leading the sensitized film from a roll to one of said apertures and the other guide leading the exposed film from the other aperture to the take-up centre piece.

The carrier may be a flat plate and to lighten the box it may be replaced by bars. One guide may be located within two parallel planes and may be on one side of said carrier and the other guide may pass outside or around the first mentioned guide and. be inclined'so as to pass from one side to the other side of said carrier.

The invention is illustrated in the accompanying drawing in which:

Fig. 1 is a side elevation of the complete film box known as a charger partly broken away.

Fig.2 is a front elevation of the same.

Fig. 3 is a rear elevationof the inner part of the film box.

Fig. 5 is .a side elevation of the inner part seen from the take-'up side. p Fig. 6 is a plan of'the inner part.

Fig. T-is a plan 'of the inner part reversed or turnedover as compared with Fig. 6. 1

Fig. 8is a sectionon'the line 8-8 of Fig. 1 seen in the direction of the arrow.

Fig.9 is an enlarged sectional view taken on the line 9--9 of Fig.6;

Fig. 10 is a side elevation of the inner part corresponding to Fig. 5; except that the take-up centre piece has been omitted,'showing a modification. r v 1 a Fig. 11 is an end view of aguide tube for the film, and Fig. 12 is an end view of a guide trough, both shown to an enlarged scale.

The box body I has an aperture 2 in one side thereof adapted to receive ajlocking piece 3 in the form of a tube having a fiat-flange.

The inner part has a front plate 4 surrounded of the box body I and make a light-tight'joint as shown clearly in Fig. 9. The front plate 4 has an aperture 6 at its upper part for the exit of the sensitized film, and another aperture 5 at its lower part through which the film enters the film box after exposure. To the rear of the front plate 4 is fixed a carrier in the form of a flat the lower aperture 6 and the other end opening within the film box. The guide tube 9 leads by one of its ends from the upper aperture 6, and passes in an incline outside the other tube 0. The tube 9 starts from the upper aperture 6 on one side of the carrier plate 1 and finishes on the other side'of said plate as seen in Figs. 3, 6 and '7. The carrier plate 1 has fixed thereto two plates and I2 to make an accurate fit. within the inner part of the box body I.

On one end of the tube 8 is mounted a cardboard tube' 1 3 upon which is wound sensitive film l4. On the other end of the tube 8 is mounted a .take-up centre piece l5 having a groove I6 fitting over the end of the tube 8. The centre piece i5 is provided with two half pins ll enabling the centre piece IE to be driven from the exterior through the centre of the locking piece 3. The centre piece l5 has a spring I 8 under which the end of the film I4 is held in known manner.

The tubular portion of the locking piece 3 accurately fits the inner part of the tube 3, thus locking the inner and outer parts together, and the fiat flange of the locking piece 3 fits accurately againstzone of the sides of the box body I, thus making a light-tight joint.

In the modification shown in Fig. 10 the carrier tube 8 and the guide tubes 9 and it are supported by bars is. The ends of the tubes 9 and 10 are fixed to the front plate 4, and the inner ends of the guide tubes 9 and I0 are connected by the side plates l i and i2 tothe plate 4% in a similar manner to that shown in Fig. 4. These plates l l and I2 do not showin Fig. 10 as they are located behind the said guide tubes.

The locking piece 3 is a tight fit within the tube 8, and its flange fits tightly against the outer face of the box body i. The locking piecet is therefore not likely to be displaced in. transit, and owing to the close fit between the flange of the locking piece and the outer face of the box body it is diificult to remove the locking piece unless a suitable toolyforrning no part of the present invention, be employed.

The guides 9 and It) for the filmshown in'Fig. 8 are tubular as shown more: clearly in Fig. 11. Instead of using tubular guides, troughs 20 of known form, such as shown in 12,,may be employed for guiding the film.

What I claim as my invention-is:'

1. A film box or'charger having an outer casing and an inn r part, the innerrpart having means for carrying a transverse tube adapted to carry at one end a roll of sensitizedfilm and at the other end a take-up centre piece on to which the exposed film is wound, means for locking the casing to the inner part consisting of a flanged tube, the tubular part passing through an aperture in the outer casing and fitting tightly within the said transverse tube and the flanged part fitting closely against the outer casing, the said centre piece being provided with means so that it may be driven through the locking device and the transverse tube, and two apertures, the one to allow the film to pass out of the box and the other to allow the exposed film to return to the take-up centre piece.

2. A film box or charger having an outer casing and an inner part, the inner part having a front plate in which are formed two apertures, said front plate having a trough around its exterior and a carrier at its rear, two guides for the film and a transverse tube supported by said carrier, one guide leading the sensitized film from a roll mounted on one end of the transverse tube to one of said apertures, and the other guide leading the exposed film from the other aperture 'to a take-up centre piece mounted on the other end of the transverse tube, means for locking the casing to the inner part consisting of a flanged tube, the tubular part passing through an aperture in the outer casing and fitting tightly within the said transverse tube and the flanged part fitting closely against the outer casing, the said centre piece being provided with means so that it may be driven through the locking device and the transverse tube.

7 3. A film box or charger having anouter casing and an inner part, the innerpart having a front plate in which are formed two apertures, said front plate having a trough around its exterior and a carrier at its rear, two guides for the film and a transverse tube supported by said carrier, one guide leading the sensitized film from a roll mounted on oneend of the transverse tube to one of said apertures and the other guide leading the exposed film from the other aper- I ture to a take-up centre piece mounted on the other endof the transverse tube, one guide being located within two parallel planes and on one side of said carrier, and the other guide passing around the outside of the first mentioned guide 1,

ARTHUR SAMUEL NEWMAN. 

